Desailly can understand the appeal to both parties, but feels a key figure for the Blues should embrace his role at Stamford Bridge and avoid becoming another high-profile squad member in Spain.

The World Cup winner told talkSPORT: “It depends on his ambition.

Eden Hazard Chelsea Premier League

“I’m not sureEden Hazardhas that intention of being that top player, being first choice at Real Madrid.

“Remember, Hazard has been in the Chelsea system for five years, and he’s been doing well, but he’s not been doing what we expected of him – scoring goals and being the equivalent of Ronaldo or Messi, he’s on and off.

“I’m not sure he’s fully ready to change and take the risk, because he will want to play regularfootball.

“The same thing goes to [Atletico Madrid forward andManchester Unitedtarget Antoine] Griezmann - is he really ready, does he have the desire to be in a competition for places at one of the top clubs and not playing football?”

While backing Hazard to stay put, Desailly acknowledges that 18-goal top scorer Costa may take the opportunity to line his pockets in the Chinese Super League if the opportunity presents itself again.

Diego Costa Chelsea Premier League

He added: “He should go if he feels [like it].

“Money now in modernfootballis high and if a Chinese or another rich team comes for him in the summer, he will have to go.